/* up-2-down 动画 */
.up-2-down-enter-active,
.up-2-down-leave-active {
  transition: all 0.3s;
}

/*准备进入, 离开完成*/
.up-2-down-enter-from,
.up-2-down-leave-to {
  opacity: 0;
  transform: translate3d(0, 100px, 0);
}
